<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org" xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3" lang="en-us">
<head>
    <meta charset="UTF-8"/>
    <title>登录页面</title>
</head>
<body>
<div th:if="${param.error}">
    无效的账号和密码
</div>
<div th:if="${param.logout}">
    你已注销
</div>
<form th:action="@{/login}" method="post">
    <div><label>账号:<input type="text" name="username"/></label></div>
    <div><label>密码:<input type="password" name="password"/></label></div>
    <div><input type="submit" value="登录"/></div>
</form>
</body>
</html>